Ahmad Saad, Al-Ahmadi and Abas, Zakaria and Abdul Ghani, Abdullah (2010) Performance of the General Directorate of Civil Defense during the Hajj season in terms of emergency management. In: Proceedings of 4th National Seminar on Hajj Best Practices Through Advances in Science & Technology, 27-29 July 2010, Eastin Hotel, Penang. Universiti Sains Malaysia, Pulau Pinang, pp. 1-9. ISBN 978-967-5417-95-5